Asked by | 18th Sep, 2009, 03:11: PM

Expert Answer:

Variations lead to increased survival of the species during adverse conditions.

Also variations may merely contribute to the genetic drift.

Speciation may take place when variation is combined with geographical isolation.

The process of evolution can take place only because variations are present.

Answered by  | 19th Sep, 2009, 12:09: AM

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